No app download, just a conversation that starts the moment they text back. Connect any LLM to a real blue-bubble number — with typing indicators, reactions and voice notes that make your agent feel human.
const blue = require('messageblue');
// Your agent replies to every inbound text
blue.on('message', async (msg) => {
const reply = await llm.chat(msg.text); // any model
await blue.send({ to: msg.from, text: reply });
});
// Handles typing, reactions & read receipts for you
AI TEAMS BUILDING AGENTS ON MessageBlue
The businesses winning right now aren't building apps — they're building relationships through messaging.
Your agent lives in the blue bubble your customers already use every day. The conversation starts the instant they text your number — no install, no login, no friction.
MessageBlue is model-agnostic. Pipe inbound messages to OpenAI, Anthropic, an open-source model or your own agent framework, and send replies back through one clean API.
Run your agent on the iMessage number you already use — or your whole team's. Send, receive and auto-reply from the same trusted line, no new number to promote.
Every inbound message hits your endpoint through webhooks that automatically retry. Run it through your model, send the reply, and MessageBlue takes care of delivery, typing indicators and reactions in the blue bubble.
Ship the experience, skip the app. A few of the agents teams build on MessageBlue:
Daily workouts, recovery tips and accountability check-ins over iMessage. Your fitness app, without the app.
Let guests book, modify or cancel reservations without calling or downloading anything. Just iMessage.
Move the spark from app to iMessage — more authentic connections, no more endless swiping.
Real-time alerts and AI-powered trade insights straight to the inbox traders actually check.
Resolve questions, hand off to a human when needed, and keep the whole thread in one place.
Bookings, reminders and follow-ups — a concierge that texts your customers like a friend would.
MessageBlue delivers the message and sends your reply — you bring the brain. Works with whatever you're already building on.
Building without code instead? The no-code Agent Studio connects to 287 business apps, so your agent can read a CRM, book a calendar or look up an order mid-conversation.
Run your agent on the number you already have for $0, then move to production with flat, transparent pricing.
Bring your own number
For teams running in production
per line · single line included
For teams scaling across many lines
For regulated & self-hosted teams
Point a MessageBlue number's inbound webhook at your endpoint, pass the message to any LLM, and reply through the API. Typing indicators, reactions and read receipts are handled for you — you can go live in minutes.
Any of them. MessageBlue is model-agnostic — it delivers inbound messages to your endpoint and sends your replies. Use OpenAI, Anthropic, open-source models, LangChain, the Vercel AI SDK, or your own agent framework.
No. Your agent lives in iMessage. The conversation starts the moment a customer texts your number — no install, no login.
Yes. MessageBlue supports rich media, voice notes, tapback reactions, typing indicators and group chats, so your agent reads like a real conversation.
Yes — 99.9% API uptime over the trailing 90 days, full-stack isolation for enterprise workloads, SOC 2 Type II controls and HIPAA-ready private cloud options.
Spin up a sandbox number in minutes, or talk to us about isolated, enterprise-grade infrastructure for agents at scale.